Member of a non active frat formal question.

[powderskier5000]

I am a currently a sophomore and my college recently suspended my fraternities charter for 4 years. However I am still an alumni of the fraternity, and the whole brotherhood is trying to stay together even though the administration is doing everything they can to stop that. We were thinking of having an unofficial "formal" for the seniors and also for people like me who just were initiated and did not get to reap many of the benefits of being part of a fraternity. However my school finds out about everything, and not suprisingly they have knowledge about our formal and are threatening us. Since this is the only formal I would ever be able to go to for my own fraternity, I am strongly considering going. Although I was wondering if anyone knows the ramifications of being charged with having a formal (ie getting sued by Nationals). If any one has any knowledge of this I'd really appreciate it.
Also I know that people will comment saying that since my charter is not active that my fraternity should definitely not have a formal. Take into account that I got to be a brother for three weeks before my school royally screwed my fraternity over because of an agenda to get rid of Greek Life. So as I said any helpful advice would be greatly appreciated.
Thanks.